Which of the following describes the position of micropyle and chalaza in an orthotropous ovule ?

Options

A. Straight - line of a funiculus
B. Parallel to funiculus
C. At right angles to funiculus
D. Oblique to funiculus

Answer

To solve the question regarding the position of the micropyle and chalaza in an orthotropous ovule, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of an Orthotropous Ovule**:
- An orthotropous ovule is characterized by its erect or straight position. This means that the various parts of the ovule are aligned in a straight line.

2. **Identify the Key Components**:
- The two key components we are focusing on are the micropyle and the chalaza. The micropyle is the opening through which the pollen tube enters, and the chalaza is the part of the ovule opposite the micropyle.

3. **Visualize the Arrangement**:
- In an orthotropous ovule, the micropyle and chalaza are positioned in a straight line along the funiculus (the stalk that attaches the ovule to the ovary). This straight alignment is crucial to understanding the structure.

4. **Conclusion**:
- Therefore, in an orthotropous ovule, the micropyle and chalaza are in a straight line with respect to the funiculus.

5. **Identify the Correct Option**:
- Based on the above understanding, the correct description of the position of the micropyle and chalaza in an orthotropous ovule is that they are aligned in a straight line along the funiculus.

### Final Answer:
The micropyle and chalaza in an orthotropous ovule are in a straight line with respect to the funiculus.

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